Results 161 to 170 of about 562 (191)

Numerical Investigation of Dimensionless Parameters in Carangiform Fish Swimming Hydrodynamics. [PDF]

Biomimetics (Basel)
Macías MM, García-Ortiz JH, Oliveira TF, Brasil Junior ACP.   +3 more
europepmc   +1 more source

Multiple environmental stressors affect predation pressure in a tropical freshwater system. [PDF]

Commun Biol
Zanghi C, Penry-Williams IL, Genner MJ, Deacon AE, Ioannou CC.   +4 more
europepmc   +1 more source

Exceptional concentration of fish diversity in Yasuní National Park, Ecuador (Napo River Basin). [PDF]

Biodivers Data J
Escobar-Camacho D, Valdiviezo-Rivera J, Carrillo-Moreno C, Argüello P, Swing K.   +4 more
europepmc   +1 more source

Search for genes gained by horizontal gene transfer in an entomopoxvirus, with special reference to the analysis of the transfer of an ABC transporter gene. [PDF]

Virus Res
Sugimoto TN, Jouraku A, Mitsuhashi W.
europepmc   +1 more source

Comparative cytogenetics and molecular phylogeography in the group astyanax altiparanae--Astyanax aff. bimaculatus (Teleostei, Characidae).

Cytogenetic and genome research, 2011
The genus Astyanax comprises small characin fish of the neotropical region. The so-called 'yellow-tailed characins' compose one of the most widely distributed Astyanax groups. A. altiparanae and A. aff. bimaculatus, are evolutionarily closely related and commonly found in several Brazilian hydrographic basins.
K F, Kavalco, R, Pazza, K D O, Brandão, C, Garcia, L F, Almeida-Toledo   +4 more
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Oogenesis and in vitro reproduction of the twospot astyanax Astyanax bimaculatus (Linnaeus, 1758) exposed to conspecific alarm substance

Animal Reproduction Science, 2023
Stress situations can be essential to trigger reproduction in fish; however, it may also inhibit it. One of those situations involves the release of the conspecific alarm substance (CAS), a natural stressor, into the water by specific fish epidermal cells after a predator attack. Little is known about the effects of that substance on fish reproduction.
Jeane Rodrigues, Maria Rosa-Silva, Hadda Tercya, Paulo Jesus, Saynara Miranda, Hingrid Oliveira, Bianca Lima, Ludmylla Santos, Caio Maximino, Diógenes Siqueira-Silva   +9 more
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A multi-approach analysis of the genetic diversity in populations of Astyanax aff. bimaculatus Linnaeus, 1758 (Teleostei: Characidae) from Northeastern Brazil

Neotropical Ichthyology, 2008
Pamponet, Vanessa de Carvalho Cayres, Carneiro, Paulo Luiz Souza, Affonso, Paulo Roberto Antunes de Mello, Miranda, Viviam Souto, Júnior, Juvenal Cordeiro Silva, Oliveira, Claudine Gonçalves de, Gaiotto, Fernanda Amato (2008): A multi-approach analysis ...
Paulo Luiz Souza Carneiro, Paulo Roberto Antunes De Mello Affonso, Juvenal Cordeiro Silva Junior   +2 more
exaly   +2 more sources

Genotoxicity in Astyanax bimaculatus (Twospot Astyanax) Exposed to the Waters of Engano River (Brazil) as Determined by Micronucleus Tests in Erythrocytes

Archives of Environmental Contamination and Toxicology, 2014
Changes in aquatic environments are potentially large, and effects on biota are highly variable. In Santa Catarina State, Brazil, the main sources of pollution in headwaters are wastewater, pesticides, and animal waste, which contain chemical and organic additives, and there is little knowledge about their effects on aquatic organisms.
Juliano André, Bogoni, Neide, Armiliato, Celi Teresinha, Araldi-Favassa, Vânia Helena, Techio   +3 more
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Characterization of a new cytotype and ocurrence of a B microchromosome in two spot astyanax, Astyanax bimaculatus Linnaeus, 1758 (Characiformes: Characidae)

Journal of Fish Biology, 2022
AbstractAlthough Astyanax bimaculatus is the most representative species of the genus in the Amazon region, there are no cytogenetic studies of A. bimaculatus species in Amazon region. Thus, we aimed to analyse the chromosome complements of specimens from this area using classic and molecular cytogenetic approaches.
Rodrigo Petry Corrêa de Sousa, Jaymeson Lielson Anjos dos Santos, Gláucia Caroline Silva‐Oliveira, Ivanete de Oliveira Furo, Edivaldo Herculano Corrêa de Oliveira, Marcelo Vallinoto   +5 more
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Evaluation of the oestrogenic potential of oestrone and bisphenol-A on the reproduction of Astyanax bimaculatus males after subacute exposure

Fish Physiology and Biochemistry, 2021
In the last decades, oestrogenic compounds have often been reported in environmentally relevant concentrations in aquatic environments around the world. Most laboratory studies of oestrogens try to understand the effects of a single contaminant, but in natural environments, the effects may be quite different due to interactions with other compounds ...
Alessandro Loureiro Paschoalini, Lourenço Almeida Savassi, André Alberto Weber, Davidson Peruci Moreira, Yves Moreira Ribeiro, Elizete Rizzo, Nilo Bazzoli   +6 more
openaire   +2 more sources